Door lock



DOOR LOCK Filed July 31, 1925 2 Sheets-Sheet 1 K m R D E R F P. Im

Aug. 16, 1927.

DOOR LOCK Filed July 51, 1925 2 Sheets-Sheet 2 m a; FWWMW:

Patented Aug. 16, 1927.

PATENT OFFICE.

omen JOSEPH P. rrmimrck, OF CHIC GO, rumors. ns srqnon or ONE-HALF 'roAUGus'r J.

' 1.1mm, or CHICAGO, ILLINOIS.

noon "Look.

Application filed July 31', 1925. serial No. 47,231. v

My invention relates to locks and more particularly. to lo cks fordouble doors such as are customarily used in garages wherein thedoorsja're locked at the top and at the bottom of their juxtaposedvertical edges.

The present application is an improvement upon the subject matter of myprior Patent No,1,53l,584.issued April 21,1925. This prior patent, andthe present application, are both concerned with the provision of aneasily and quickly opened fastening means for thedoor, such that asingle key may be inserted ina conveniently located lock, the turning ofthe key releasing the door latches at the top and bottom of the oSome'of the objects of the present invention are: to provide asimplified form'of latch mechanism; to proyide an improved constructionof housing for thislatc'h operatlng mechanis'm; to provide an extensiverange of adjustment ofboth the latch operating rods and of the lockingshoulders that the latches engage; to provide latches which will alwaysbe supported in proper position to r'e-engage these shoulders when thedoor is open; and to provide a self-aligning construction of rotaryelement for connecting the lock mechanism to the latch actuatingmechanism. V

These and further objects andfeatures of my invention are set forthin'the following description of a specificembodiment thereof. ln theaccompanying drawings which illustrate such an embodiment-z. V V Figure1 is an elevational View of the interior side of a double door of agarage provided with the lock of my invention;

I Figure 2 is a transverse sectional view through the door illustratingthe present lock mechanism in side v elevation.

Figure 3 is a longitudinal sectional view through the housing and latchmechanism on a plane parallel tothe door. 7

Figure 1 is asiinilar view on a plane at right angles theretou e p H vFigure 5 a perspective view showing the two halves of the housing. H I

Figure 6 is a horizontal sectional view taken approximately on the planeof the line 6 6 voflligure 4;. V

Figure 7 is an upper plan View of the upper latch and itsassociatedlocking shoulder, 7

this view being taken approximately on the plane of the line 77 ofFigure 8.

Figure 8 is a vertical sectional view taken approximately on the planeof the line 8-8 of Figure 7, and Figure 9 is a vertical sectional viewthrough the latch at the lower end of the door. I i v I p The doubledoor here shown comprises doors 12 and 13, hinged at their oppositevertical edges to the door frame, the free edge of the door 13preferably being provided with a strip 14 for over-lying the adiacentedge of the door 12, so that the door 13, when, locked, willprevent opening of the door 12. p i H The present locking meanscomprises an upper latching device 16 for the upper edge of the door, alower latching device 17 for the lower edge of the door and lockreleased operating mechanism 18 mounted at an intermediate point on thedoor 13 and .operatively connected to said upper and lower latchingdevices, v

The. upper latching device comprises a latch 21 pivoted to a bracket 22secured by screws zero the door 13 (Figures 7 and 8); The latch ispivoted on a pin 24; extending between two ears 25 projecting from thebracket'22. The hook end 21' of the latch is adapted to engage overthedropped intermediate portion 2620f a stationary latch bracket 26.This bracket has relativelywide attaching ears 27 which are slotted at28 to receive the fastening screws 29. The slots 28 permit inward andoutward adjustment of the bracket 26 so that thelatch 21 will drop overthe locking shoulder 26 -when the door is completely closed. Thisbracket can be easily constructed in the form of a stamping ofrelatively heavy sheet metal. a V i a When the door 13 is open it isdesirable that the latch 21 be supported in proper horizontal position.whereby its curved front end 31'can cam itself over the dropped shoulderportion 26' as the door isswung to closed position. The support of thelatch in this proper horizontalfpos'ition is obby extending a tail 32back from the pivotal center of the latch for engaging the underside ofalug-or shoulder 33 on the bracket 22, thereby preventing the latchfroi'n. dropping down to a point where its sloping end 31 would notengage the front edge of the latching shoulder 26'. The shoulder 34 onthe latch 21 is also adapted to strike this stationary lug 33 on thebracket to prevent the latch from being thrown too high where it mightstrike the upper door j amb or rail in the closing movement of the door.

Extending from the bottom-of the latch are two spaced ears 35 betweenwhich is pivoted the flattened end 36 of anoperating rod 37. Thisoperating rod extends down to the lock released operating mechanism 18,which 1 shall presently describe.

The lower latching device 17 comprises a somewhat similar latch 41 whichis pivoted between ears 42 projecting from a bracket 43, secured to thedoor 13 by screws 44. The hook end 41 of this latch engages over theupwardly turned flange 45 constituting part of a latching floor plate46. This floor'plate also has transverse slots 47 therein for the capscrews 48, these slots permitting inward and outward adjustment of thisfloor plate similar to the adjustment of the upper bracket 26.

This latch also has a tail portion 49 adapted to engage the underside ofa stop shoulder 50 formed as a part of the bracket 43. This tail portionstriking this stop shoulder prevents the latch from dropping down belowa position where its curved front end 51 will cam itself over thelocking shoulder 45; and the co-operating shoulder 52, directly abovethis tail portion 49 also prevents the latch from being thrown up toohigh. Extending upwardly from the top of this latch are two spaced ears53 between which is pivotally connected the flattened end 54 of anoperating rod 55 which extends up to the latch operating mechanism 18.

Attention is directed to the fact that the weight of each latch iseffective to drop that latch to an engaging position, and that theweight of both latches is supplemented by the weight of the twooperating rods 37 and 55, both of which move downwardly when the latchesdrop into latching position.

The lock released operating mechanism 18 comprises a housing 57 which isaflixed to the inner side of the door 13 at a convenient height for theinsertion of the key. The present locking device is operated entirelythrough the instrumentality of the key 58, the insert-ion of this key,unlocking the lock mechanism and the rotation thereof lifting thelatches to unlock the door. This key is effective to rotate any-rotaryelement com prising partof a suitable lock. The conventional pin-tumblertype of lock is preferable for the present use and accordingly I haveshown such a look at 59, inserted in a bore 61, which is drilled throughthe door 13 structed of sheet metal stanipings. The front wall has acircular depressed area 67 which is drawn into the rear end of the bore61 in the mounting of the housing Two diametrically opposite apertures68 in this depressed portion 67 receive long screws 69,

Figure 6, which thread into tapped holes 1 in the rear end of the lockbody 59. By drawing up on these screws, the lock 59 and the housing 57are drawn into firm engagement with the door 13 and the body portion ofthe lockis also held against rotation in the bore 61.

The rotatable plug portion 71 of the lock preferably has its rear endslotted as indicated at 7 2, and in this slotted end is pivoted thetongued end 73 of a rotatable shank 73.

1 his shank is of substantially square cross section and is threadedover a considerable portion'of its length, the thread being cut This inthe corners of the square section.

rotatable shank passes through a hole 74 in the depressed portion 67 ofthe front housing plate, and is extended through this housing and outthrough an opening 75 in the rear housing plate 66. The pivotalconnection and the slight lateral play of the tongued end 73 of theshank in the slot 7 2 afford a limited universal joint movement andavoid the necessity of accurate alignment of the shank 73 with referenceto the lock 59 and the apertures 74 and-7 5 in the housing. 7

The rotation ofthis shank 73 is effective to actuate a follower or guidebar 76 to which the upper and lower rods 37 and55 are, connected. Thisbar is guided in slot likeopenlugs 77 in the upper and lower walls ofthe housing 57. The ends of the bar are turned laterally away from thedoor and have threaded bosses 7.878 formed thereon for receivingthreaded ends of the rods 37 and 55. This bar'carries a roller 79rotatably mounted on a pivot pin'81-secured in the bar. Directlybelow-this pivotpin. thehar has a longitudinallyextending slot 8:?formed therein through which passes the shank 73.

lifounted on the shank '73 on the rear side i of the bar 76 is anGCCBHtTICB consisting of a circular disc or roller having an eccentriclocated bore therein. A hub 341s rigidly driven into this eccentricbore. This hub has a neck portion extendingthrough the 7 The hub 84 hasa bore ofsquare section at one end, snugly to receive the shank 7 3, theother end being of slightly enlarged cylindrical section to facilitatepassing the shank therethrough. Two nuts 87 screw over the end of theshank and bear against the eccentric 83, thereby preventing the lock 59from being pulled out of the end of the bore 61.

The two plates which form the housing 57 are stamped out substantiallyas shown in Figure 5. The front plate 65 has end flanges 88\VlllCll-vfOIDLl the topand bot-tom.walls of the housing. Eachoftheseend flanges has its center portion notched out as clearly shown in thisfigure. The other plate 66 has end tongues 89 which take into thecut-out portions of the flanges 88 to a depth sufficient to leave theslots 77 through which passes the actuating guide bar 76. This latterpiate 66 has side flanges .91 which form the side walls of the housing.Projecting laterally from the edges of these side flanges 91 areapertured cars 92 which are adapted to align with corresponding ears orlugs 93 projecting from the other housing plate 65. Screws 9% passthrough these alined pairs of ears and rigidly fasten the housing to thedoor. The front housing plate 65 may have an additional pair ofapertures 95 for receiving screws 96 adapted to anchor the front plateto the door before the assembly of the housing.

One or both of the operating rods 37 and may be jointed into twosections, such as by the provision of an internally threaded socket 97on one of the sections receiving the threaded end of the other section,as shown in Figure The ends of the rods which screw into the bosses 78on the actuating bar 76 may be threaded over considerable portions oftheir length to afford a considerable range of linear adjustment ofthese rods, the excess portion of each rod projecting beyond the hub78after adjustment of the device being cut ofl. The screw threadedadjustment of these rods in the hubs 78 is, of course, made before thetongued ends 36 and 5% of these rods are finally connected to theirrespective latches- In the operation of the device, it will be apparentthat rotation of the key 58 from the position shown in Figure 4 willrevolve the rotatable element 73 and eccentric 83, which eccentric,acting through the roller 79 will raise the actuating bar and associatedrods and latches. When the key is revolved back to its normal positionthe eccentric 83 is swung down to the position illustratedin Figures '3and 4, and concurrently therewith the actuating bar and its associatedrods and latches move down under their own weight to bring the latchesinto lockingposition, The lock is preferably so designed that the key 58cannot be'removed until the eccentric 83 has been rotated down to aposition where locking devices for the upper and lower edges of thedoor, a housing secured to the rear side of said door, a barreciprocably supported in said housing and extending above and below thesame, rods connecting said bar to said locking devices, a roller pivotedon said bar, said bar having a slot therein, a lock released rotaryelement extending through said slot, and eccentric means on said rotaryelement for engaging said roller.

2. In locking mechanism of the class described, the combination of upperand lower locking devices for the upper and lower edges of the door, areciprocable actuating bar, means for guidingsaid bar, means connectingsaid bar to said locking devices, a roller on said bar, said bar havinga slot therein, a rotary element extending through said slot, and aneccentric on said rotary element for engaging said roller.

3. In locking mechanism of the class described, the combination of upperand lower locking devices for the upper and lower edges of the door, areciprocable actuating bar having a thrusting surface operativelyconnected to said locking devices, said bar having an opening therein, arotary element in said opening, and means actuated by said rotaryelement adapted to engage a thrusting surface on said bar forreciprocating the latter.

4. In locking mechanism for garage doors or the like. the combination ofupper and lower latches, pivot brackets secured to the upper and loweredges of the door on which said latches are pivoted, stationary lockingshoulders adapted for engagement by said latches, a verticalreciprocable actuating bar having threaded hubs at its ends, rods screw-7 5 ing into. said hubs and pivotally connected to said latches, meansfor guiding said actuating bar, and lock released means for re- 7ciprocating said bar.

5. In-locking mechanism for garage doors and the like, the combinationof pivot brackets secured to the upper and lower edges of the door,upper and lower latches pivotally supported on said brackets. areciprocable actuatin bar, rods adjusta-bly connected at.

their enc s to said actuating bar and pivotally connected to saidlatches, a housing comprising front and rear sections. flanges on eachof said sections forming walls for the housing, the end flanges beingspaced to provide guide slots for said actuating bar, said housing beingsecured to the rear side of the garage door, a cylinder lock mounted ina bore in said door, said bore extending through said door to saidhousing, screws passing through apertures in the front housing sectionand engaging holes in said lock, a shank pivotally connected to therotatable cylinder of said lock and extending through bearing aperturesin the front and rear housing sections, an eccentric on said shank, anda roller pivotally mounted on said actuating bar adapted to be engagedby said eccentric.

6. In locking mechanism of the class described, the combination of upperand lower locking devices for the upper and lower edges of the door,lock released operating mechanism connected to said locking devices, anda housing for enclosing a portion of said operating mechanism, saidhousing comprising a front housing plate and a rear .housing plate, saidfront housing plate having upper and lower flanges having their centralportions cut away, said rear housing plate having side flanges andhaving end tongues extending into the cut away portions of the endflanges oflsaid front housing plate, there being formed guide slotsbetween said tongues and the bottoms of said cut away portions forguiding the reciprocable actuating bar of said lock released operatingmechanism.

7. In a device of the class described, the

combination of upper and lower latches for the top and base of a door,means connecting said latches for simultaneous operation, adjustablefixed locking shoulders for said latches comprising a stamped sheetmetal U- bracketwith out-turned feet and a stamped sheet metal.L-bracket and stop means to hold one of said latches in camming relationto enter said U-bracket.

I 8. In a device of the class described, the combination ofreciprocating latch operating means, actuating mechanism for said means,a casing for said actuating mechanism comprising complementary partsadapted to enclose said mechanism and provide guides for saidreciprocating means, a closure having a bore, and a stamped depressionin said casing to co-operate with holding means to align said casingwith said bore.

In witness whereof, I hereunto subscribe my name this 22nd day of July,1924.

JOSEPH P. FRED-RICK.

